Switch



Patented Mar. 3, 1931 J 'ER, o 'ovnnBnoox, KANSAS. i

swrrcn Application filed August 36, 1929. Serial ,No. y

The object of this invention is to provide means for automatically cutting out a radio receiving apparatus and loud speaker, or other similar energized device or apparatus upon lifting a telephone receiver from the lever of a well known type of telephone instrument so that an individual receiving a message may not be disturbed by the reproduction of music or the reproduction of other sounds of the general character indicated.

A further object is to provide a particular switch and means automatically and mechanically opening the switch when a telephone connected with a central exchange or the like is being used, this switch being interposed in a battery circuit of a radio receiving apparatus or in the circuit of the loud speaker.

lVith the foregoing and otherobjects in view, the invention consists in the novel construction and arrangement of elements disclosed, it being understood that modifications may be made within the scope of the claim without departing from the spirit of the invention.

In the drawings forming part of this application:

Figure 1 is a view in elevation, showing a portion of a conventional type of telephone instrument including a receiver and transmitter and the lever upon which the receiver is supported when the telephone is not in use.

Figure 2 shows the switch per se in detail, the wires of the circuit being connected with the radio apparatus being illustrated, and the cover for the special switch herein disclosed being dotted.

Figure 3 is a view looking from above in Figure 1, and showing the manner of mounting certain of the elements including the.

strap which in Figure 1 is illustrated as extending over the hinged or pivotal connection of the mouthpiece.

Figure 4 is a perspective View showing the switch operating element.

The telephone lnstrument includes the standard'lO, the transmitter 11 and the receiver 12. The usual lever 13 controls the.

. a very light clamp,

swi'tch forthe telephone, and, he fork end 1s shown in" elevation, from one side thereof. 7

The pivotal or'hinge connection between the transmitter 11 and the elementlil carried by'the standard is designated 14, and the device now to be described is connected at the hinge joint. A strap 15 is secured by means of ascrew 16, at the point shown, that is under washer or boss 17, and this screw may have a milled edge portion and head 18 to permit of easy manipulation. The device may thus be instantly applied, and the strap 15 supports a housing including a base and cover 19, the latter fitting over base 20 constituting a switch base.

The switch per se includes a blade or the like, or merely a strip of metal 22, having a deflected portion 23 secured by screw or the like 24 to base 20. This screw is in electrical connection with the switch, and forms a terr minal with which one of the wires 25 to be connected with the radio apparatus has electrical connection.

The other switch element, or contact ele ment, is designated 26, and terminal 27 is electrical connection with this element 26 and with one of the wires 28 connected with the radio apparatus.

A pin or the like, designated 30 is mechanically connected by means of screw 31" with switch 22, and is slidable thru the base 20, being provided with a lower end in the form of a head or enlarged portion 31, which will be positioned directly above lever 13. The wires connected with the special switchk. being described may be secured to standard 10 by means of an element 33, in the form of or in the form of flexible retaining means,

The position of the element 20 with its head 31, with reference to the lever 13 of the telephone, is such that when the receiver 12 is in the position shown in Figure 1, the telephone not being in use,-the switch 22 will remain closed, and the radio apparatus 'aii may be used at will. If a call is being received on the telephone, or if a message is to be transmitted, the receiver 12 will of course be removed, the lever 13 will move upwardly, and by means of elements 30, 31,-

the switch 22 will be lifted, at the left hand end thereof as shown in Figure 2, and the circuit for the radio apparatus will be broken between between elements 22 and 26.

The radio circuit is closed in an obvious manner upon replacing the telephone receiver 12 on the lever 13.

What I claim is In a switching device of the class described, mounting means comprising an arm proportioned to pass around the shank of a' pivoted telephone transmitter, a switch supporting element carried by the arm, and an adjustable securing device passing thru the arm in position to engage a mounting element of the transmitter whenthe switch supporting element is in position above a pivoted switch lever constituting a hook for a receiver.

In testimony whereof I afiix my signature.

' JOEL P. KESLER. 

